Photoshop: Transform Controls Disappear

After I have been working in this file for some time, the bounding box and transform controls on the layer cease to show up when I select the move tool.

I have the move tool selected and show transform controls checked. If I move to another open file then I see the transform controls. Also if I close and reopen the file then the controls show up again.

Have not tried updating video card drivers. I will try disabling the openGL drawing the next time it happens. It is weird because it has happened more than once, but I usually just reopen the file and continue on working.

I had the same thing after I changed the desktop background to gray 128, the transform guides were also 128... simple to fix change the transform guides to another colour or change background colour to default... good luck